No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing since 1989

-----

Black brass

I need to stain or color cartridge brass deep black or deep blue... most of the commercial products available leaves blotchy results. Somewhat durable. Any help?

Mike Davis
T & M Surplus - Moses Lake, Washington, U.S.A.
2003

Black colour for brass:
1 lit ammonia ⇦ this on eBay or Amazon [affil links] 25 %
200 gr basic copper carbonate ⇦ this on eBay or Amazon [affil links]

Object must be grease and oxide free! Cold immersion(1-4 min.)!Needs strong ventilation or you can work outside! Diluted solution also works!

Budija Goran
- Zagreb, Croatia
2003

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: